ARGH IM SO ANGRY WITH MYSELF

why am i so dumb in accountings??!! i made a mistake right from the start. that contributed part to why my final ans didnt balance. didnt add this to that, didnt minus this from that etc... super duper stupid of me!!!!! did the test qn early this morning at 6+am! and i couldnt sleep coz i kept thinking of how stupid i was, thus an early post. its 30% of my overall grade somemore. i wonder how many marks is gonna be deducted. AIYOH! SIGH~

tests are all over, classes are ending soon. 4 more lessons of productivity management, 5 more lessons of accounting & finance. exams on 8th and 13th of dec. how fast! i wonder when's my final project out